<template>
    <div style="width: 500px">
        <el-input
                placeholder="请输入部门名称进行搜索。。。"
                prefix-icon="el-icon-search"
                v-model="filterText">
        </el-input>
        <el-tree
                :data="deps"
                :props="defaultProps"
                :filter-node-method="filterNode"
                :expand-on-click-node="false"
                ref="tree">
          <span class="custom-tree-node" slot-scope="{ node, data }"
                style="display: flex;justify-content: space-between;width: 100%">
            <span>{{ node.label }}</span>
            <span>
              <el-button
                      type="primary"
                      size="mini"
                      class="depBtr"
                      @click="() => showAddDep(data)">
                添加部门
              </el-button>
              <el-button
                      type="danger"
                      size="mini"
                      class="depBtr"
                      @click="() => showDeleteDep(data)">
                删除部门
              </el-button>
            </span>
          </span>
        </el-tree>
        <el-dialog
                title="添加部门"
                :visible.sync="dialogVisible"
                width="30%">
            <div>
                <table>
                    <tr>
                        <td>
                            <el-tag>上级部门</el-tag>
                        </td>
                        <td>{{pname}}</td>
                    </tr>
                    <tr>
                        <td>
                            <el-tag>部门名称</el-tag>
                        </td>
                        <td>
                            <el-input v-model="dep.name" placeholder="请输入部门名称。。。"></el-input>
                        </td>
                    </tr>
                </table>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addDep">确 定</el-button>
            </span>
        </el-dialog>
    </div>

</template>

<script>
    export default {
        name: "DepMana",

        watch: {
            filterText(val) {
                this.$refs.tree.filter(val);
            }
        },
        mounted() {
            this.initDeps();
        },
        methods: {
            addDepWithDeps(deps,dep){
                for (let i = 0;i < deps.length;i++){
                    let d = deps[i];
                    if (d.id == dep.parentId){
                        d.children = d.children.concat(dep);
                        if (d.children.length > 0){
                            d.isParent = true;
                        }
                        return;
                    }else{
                        this.addDepWithDeps(d.children,dep);
                    }
                }
            },
            initDep(){
                this.dep.name = '';
                this.dep.parentId = -1;
                this.pname = '';
            },
            addDep(){
                this.postRequest('/system/basic/department/',this.dep).then(resp=>{
                    if (resp){
                        //console.log(resp.obj);
                        this.addDepWithDeps(this.deps,resp.obj);
                        this.initDep();
                        this.dialogVisible = false;
                    }
                })
            },
            showAddDep(data){
                this.dep.parentId = data.id;
                this.pname = data.name;
                this.dialogVisible = true;
            },
            removeDepWithDeps(p,deps,id){
                for (let i = 0;i < deps.length;i++){
                    let d = deps[i];
                    if (d.id == id){
                        deps.splice(i,1);
                        if (deps.length == 0){
                            p.isParent = false;
                        }
                        return;
                    }else {
                        this.removeDepWithDeps(d,d.children,id);
                    }
                }
            },
            showDeleteDep(data){
                if (data.isParent){
                    this.$message.error('父部门删除失败');
                }else {
                    this.$confirm('此操作将永久删除该['+data.name+']部门, 是否继续?', '提示', {
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'warning'
                    }).then(() => {
                        this.deleteRequest('/system/basic/department/'+data.id).then(resp=>{
                            if (resp){
                                this.removeDepWithDeps(null,this.deps,data.id);
                            }
                        })
                    }).catch(() => {
                        this.$message({
                            type: 'info',
                            message: '已取消删除'
                        });
                    });
                }
            },
            filterNode(value, data) {
                if (!value) return true;
                return data.name.indexOf(value) !== -1;
            },
            initDeps(){
                this.getRequest('/system/basic/department/').then(resp=>{
                    if (resp){
                        this.deps = resp;
                    }
                })
            }
        },
        data(){
            return{
                filterText:'',
                deps:[],
                defaultProps: {
                    children: 'children',
                    label: 'name'
                },
                dialogVisible:false,
                dep:{
                    name:'',
                    parentId:-1
                },
                pname:''
            }
        },

    }
</script>

<style>
    .depBtr{
        padding: 2px;
    }


</style>
